ONORM EN 14389-1 : 2015
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ROAD TRAFFIC NOISE REDUCING DEVICES - PROCEDURES FOR ASSESSING LONG TERM PERFORMANCE - PART 1: ACOUSTICAL CHARACTERISTICS
23-11-2023
12-01-2013
Diese Norm legt die Verfahren zur Beurteilung der akustischen Beständigkeit von Lärmschutzeinrichtungen an Strassen fest. In dieser Norm ist die Schallabsorption gekennzeichnet durch den Schallreflexionsindex DLRI nach CEN/TS 1793-5. Die Luftschalldämmung ist gekennzeichnet durch den Index der Luftschalldämmung DLSI nach CEN/TS 1793-5.
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